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Volume of Open Borehole and Annular Space <br /> Between Casing and Hole <br /> Volume/ <br /> Hole linear ft. Volume/ <br /> Diameter Nominal linear ft. of* <br /> of hole Casing Diameter Annular Space <br /> (inches) Gal. Cu. ft. <br /> ----------------------------------y_(inches)`-------Gal---- <br /> Cu._Ft. <br /> i 7.25 2.14 0.29 2 <br /> 1.91 0.26 <br /> 8.7.5 2.78 0.37 2 <br /> I 2.55 0.34- <br /> 10.25 4.29 0.57 2 4.06 0.54 <br /> i 10.25 4.29 0.57 .4 3.46 0.46 <br /> t <br /> ' 12.25 6.13 0.82 4 5.30 0.71 <br /> E Note. Annular volumes will be multiplied by 30$ to account for <br /> porosity of filter pack. <br /> If the aquifer is <br /> q slow to recharge, 'development will <br /> i continue until recharge is too slow to practically continue. <br /> The volume of water produced versus time will be recorded. <br /> J All withdrawn groundwater will be stored on-site in 55 <br /> gallon waste drums unless permission is granted by the } <br /> appropriate regulatory agency to discharge the water to the <br /> ground surface or sanitary sewer. Drummed water will be <br /> labeled with the source of the water to help ensure. <br /> appropriate disposal based on contamination levels. <br /> 1I.0 Soil Sampling Protocol - <br /> 11.1 Sample Collection During Drilling Activities <br /> i A proposal will be submitted to the lead Regulatory. <br /> Authority with proposed boring/sampling locations. The <br /> exact 'location and number of borings at each site will be <br /> u determined in the field by the Project Geologist/Engineer. <br /> Prior to arriving at the sample site, the drill rig/augers <br /> will be steam cleaned .and all 'sample equipment will be j <br /> cleaned. Cleaning will be conducted on-site on all sampling <br /> equipment between each sample interval. <br /> E <br /> IJ Soils samples will be obtained using .a. California..:-modified:...... <br /> __ � - .. _... spli.,-spoon..._samnlar ...containing- three,, six . inch long, two <br /> :. . <br /> inei� diameter brass tubas, ThQ sampler will be driven 18 f. <br /> inches ahead of the hollow stem auger by a 140ound hammer <br /> Y. with a 30 inch drop n accordance with American <br /> er <br /> In n Society for <br />